Hue / Saturation / Brightness Issue ...

[dbee]

I'm using Imagick / ImageMagick with PHP

PHP 5.1.6 (cli)
Version: ImageMagick 6.3.7 01/09/08 Q16 http://www.imagemagick.org

I have a problem adjusting the Hue/Saturation/Brightness. Everytime i make an adjustment, the photo goes completely black.

Code: Select all

        ( $val == 'more') ? ( $d = 100 && $e=90 ) : ( $d=-100 && $e=-90 ) ;

        // Modulate Image - Brightness, Saturation, Hue
        $r_pic->modulateImage($d,$d,$e);

I've played around with it, but I can't seem to get it to work right. Everything else works fine, I can resize, crop, create effects etc... Imagick seems to be installed properly. So is this a bug then or what ?

[dbee]

Should I post this in bugs then ?

[mkoppanen]

I hate to say but works for me. I am using ImageMagick 6.4.0 and modulateImage seems to be working as it should be.

[fmw42]

there was a bug before IM 6.4.0-10, but it was fixed.

[DarkKlown]

I'm using having the same problem with the following setup, I'm trying to turn a colour photo into black and white and it just comes out black.

Maybe someone can suggest another way to turn a image into black and white?

I've compiled the imagick against ImageMagick 6.3.7 02/18/08 Q16 http://www.imagemagick.org

and i'm using the following code:

Code: Select all

        $thumb->readImage($row['imageFileName']);
        $thumb->thumbnailImage(160, 160, true);
        $thumb->modulateImage(0, -100, 0);
        $thumb->writeImage($row['imageFileName']);

imagick
imagick module enabled
imagick module version 2.2.1
imagick classes Imagick, ImagickDraw, ImagickPixel, ImagickPixelIterator
ImageMagick version ImageMagick 6.3.7 02/18/08 Q16 http://www.imagemagick.org
ImageMagick copyright Copyright (C) 1999-2008 ImageMagick Studio LLC
ImageMagick release date 02/18/08
ImageMagick Number of supported formats: 179
ImageMagick Supported formats A, AI, ART, ARW, AVI, AVS, B, BMP, BMP2, BMP3, C, CAPTION, CIN, CIP, CLIP, CMYK, CMYKA, CR2, CRW, CUR, CUT, DCM, DCR, DCX, DFONT, DJVU, DNG, DOT, DPS, DPX, EPDF, EPI, EPS, EPS2, EPS3, EPSF, EPSI, EPT, EPT2, EPT3, EXR, FAX, FITS, FRACTAL, FTS, G, G3, GIF, GIF87, GRADIENT, GRAY, HISTOGRAM, HTM, HTML, ICB, ICO, ICON, INFO, IPL, JNG, JP2, JPC, JPEG, JPG, JPX, K, K25, KDC, LABEL, M, M2V, MAP, MAT, MATTE, MIFF, MNG, MONO, MPC, MPEG, MPG, MRW, MSL, MSVG, MTV, MVG, NEF, NULL, O, ORF, OTB, OTF, PAL, PALM, PAM, PATTERN, PBM, PCD, PCDS, PCL, PCT, PCX, PDB, PDF, PEF, PFA, PFB, PFM, PGM, PGX, PICON, PICT, PIX, PJPEG, PLASMA, PNG, PNG24, PNG32, PNG8, PNM, PPM, PREVIEW, PS, PS2, PS3, PSD, PTIF, PWP, R, RAF, RAS, RGB, RGBA, RGBO, RLA, RLE, SCR, SCT, SFW, SGI, SHTML, SR2, SRF, STEGANO, SUN, SVG, SVGZ, TEXT, TGA, THUMBNAIL, TIFF, TIFF64, TILE, TIM, TTC, TTF, TXT, UIL, UYVY, VDA, VICAR, VID, VIFF, VST, WBMP, WMF, WMZ, WPG, X, X3F, XBM, XC, XCF, XPM, XV, XWD, Y, YCbCr, YCbCrA, YUV

Directive Local Value Master Value
imagick.locale_fix 0 0

[DarkKlown]

Ok i figured it out. all the values should be set to 100 and then subtract whatever you want from them.

so the line should read:

Code: Select all

        $thumb->modulateImage(100, 0, 100);

This will leave the hue at 100%, take down the saturation by 100%, and leave the brightness at 100%.

Rather annoying. I hope this saves someone else a few moments of hair pulling.